Single Fan Heat Dissipation System for Notebook Noise Reduction

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Solution Overview

Problem

Conventional dual-fan cooling systems in high-performance notebook computers are noisy, vibrational, and consume high power, necessitating an improved heat dissipation solution.

Innovation Solution

A heat dissipation system utilizing a single fan, thermally coupled with heat pipes and heat dissipation arrays, where the fan generates airflows towards heat sources and heat dissipation arrays, optimizing airflow usage and replacing sidewall design with support posts to form a structural support within the casing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a dual-fan cooling system is used to meet heat dissipation requirements, then heat dissipation performance is improved, but noise, vibration, and power consumption increase

Engineering Contradiction:
Improveheat dissipation performanceVSAvoidnoise and vibration
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The patent merges the functions of two separate fans into a single fan system. The first fan blows air to the first heat source, the second heat source and the first heat dissipation array, while the second fan blows air to the second heat dissipation array. This consolidation reduces the number of rotating components from two to one, thereby reducing noise and vibration while maintaining effective heat dissipation across all heat sources and arrays.

Inventive Principle:
Principle #5Merging (Combining)

2Temperature

If a dual-fan cooling system is used to meet heat dissipation requirements, then heat dissipation performance is improved, but power consumption increases

Engineering Contradiction:
Improveheat dissipation performanceVSAvoidpower consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The patent combines multiple fan functions into a single fan system that serves multiple heat sources and heat dissipation arrays. By using one fan instead of two, the system reduces power consumption while still providing adequate cooling to all components through strategically positioned fans that blow air to multiple targets simultaneously.

Inventive Principle:
Principle #5Merging (Combining)

3Temperature

If multiple fans are used for heat dissipation, then cooling coverage is improved, but device complexity increases

Engineering Contradiction:
Improvecooling coverageVSAvoidsystem complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent reduces system complexity by merging multiple fan functions into a single fan. The first fan is positioned to blow air to the first heat source, second heat source and first heat dissipation array, while the second fan blows air to the second heat dissipation array. This simplification reduces the number of components, assembly steps, and potential failure points while maintaining comprehensive cooling coverage through optimized airflow paths.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system effectively dissipates heat with reduced noise, vibration, and power consumption by utilizing a single fan to direct airflows efficiently towards multiple heat sources and arrays, while providing structural support within the electronic device.

Implementation Method 1

The first heat pipe is thermally coupled with the first heat source. The second heat pipe is thermally coupled with the second heat source.

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

heat pipes

Methodology Applied
Scientific EffectPhase change: Phase Change

Implementation Method 3

The single fan is located between the first heat source and the second heat source, and configured to blow airflows towards all of the first heat source, the second heat source, the first heat dissipation array and the second heat dissipation array.

Methodology Applied
Scientific EffectForced convection: Forced Convection

Data Source

PatentUS11397453B2Heat dissipation system
Publication Date: 2022.07.26 INVENTEC PUDONG TECH CORPOARTION
  • US11397453B2 patent drawing
  • US11397453B2 patent drawing
  • US11397453B2 patent drawing

AI summary

A heat dissipation system includes a single fan, first and second heat sources, first, second, and third heat pipes, and first and second heat dissipation arrays. The first heat pipe is thermally coupled with the first heat source. The second heat pipe is thermally coupled with the second heat source. The third heat pipe has a first position thermally coupled with the first heat pipe and a second position thermally coupled with the second heat pipe. The first heat dissipation array is arranged around the first position and thermally coupled with the third heat pipe. The second heat dissipation array is arranged around the second position and thermally coupled with the third heat pipe. The single fan is between the first and second heat sources, and configured to blow airflows towards the first and second heat sources, the first and second heat dissipation arrays.